Nap-raising machine



oct. 2o, 1925. 1,557,750

' E. WENZEL.

NAP RAISING MACHINE Filed Sept. 4. 1925 Patented Oct. 20, 1925.

UNITED STATES EMIL WENZEL, for AUE, GERMANY.

NAP-Raisins MACHINE.

Application filed `September 4, 1923. Serial No. 660,2'90. l

To all whom t may cof/wem:

Be it known that'I, EMIL VENZEL, a citizenof the German Realm, residingat Aue i/Erzgebirge, Germany, have invented certain new and usefulImprovements in Nap- Raising Machines, of which the following is aspecification. v' f f Inthe well knownnap-'raising ,machines with cardrollers provided ona raising cylinder the greatest working effect occursat those points where the card rollerscome into and out of contact withthe cloth. Thus, it has already been proposed togive to the nap-raisingrollers, in Aadditionto theirrotational motion aroundqtheir own axes,'aseparate'motion aroundV the axis of .the (Syl-l inder for 'the purposeofthereby increasing their effective action." According? tothe knownproposal the nap-'raising rollersv have been mounted withv their journalbearings in guideslots in the end walls ofthe cylinder, these guideslots being arrangedvto exs tend in an arc-shaped or straight directionat a more or less steep --acute angle tothe tangent of theirpoint ofintersection with the periphery of the cylinder. Inapparatus of thattype the nap-raising rollers strike the cloth with a blow as Ait were.The mutual coming'into and out of contact take place more rapidly :thanissuitable for a proper nap-raising action. v'The separate 'motion ofthe nap-raising rollers alternately outwards and inwardsinthei'r'guideslots necessitates' a complicated.L separate drive. Moreover,oscillations of the` masses are produced which impair the uniformityv ofthe nap-raising action .since they disturb the steady running of thecylinder.V p a VIt has also been proposed to .mount .the raising rollersin sets `on subsidiary cylin-4 ders arranged roundthe maincylinder shaftin such a manner that the raising'- rollers'will be rotated about theaxes of the subsidiary cylinders as well as about their own axes. Inthis case the raising rollers have to move through a much greaterdistance than is necessary to move them into and out of contact with thecloth and moreover only a small proportion of the total number ofrollers employed can' be brought into action at one time,'namely onlyone roller of each set.

The present invention has for its object to overcome the 'drawbacksabove referred to, and with this object in view the invention consistsin providing means interposed between the raising rollers the ends`ofjthe raising cylinder for imparting eccentric movement totheindividual nap raising rollers. The 'ends ofthenap raising rollers arerotatably mounted on pins providedjon stub shafts journalledin theendsvof the raising cylinder, the l axes of the rollers being fofset withrespect to the axes of thestub shafts.V These' stub shafts ,arefurnished with toothedl wheels 'meshing 'with large toothed wheels'thatarelocated by thefsideof ,and co;- l

axially with the ;cylinden, The rollers fare provided in ytheknownmanner A.with n small beltpulleys which aredriven by theusufaldriving beltsv forthe purpose o fvcausing the nap-raising {rollers torevolve aro-und their 'As the ,cylinder rotates, the ro-fy Oneembodiment .of Ithis invention is iillus-l ing drawings inwhichzl tratedvby way ofexamplein the a'gconnpany-` Figure 1 is a diagrammatic.cross-section of a nap-raising drumi embodying the im#v provements ofthis invention, and; f 1,.

-Fig. 2 isa planedevelopment .of a portion ofthe periphery ,jof thesaidkdrum, .j'

As shown, the rollers a1 and a2 which are arranged'torun alternatelywith and against the direction `offthe 'cloth` are niountedjn the usualmanner ,around the periphervo-f the cylinder..` They are carried atyeachend of the cylinder in aspider 7),' both spiders are fixed on theaxle of the cylinder.

In the spiders b there are mounted stub shafts d which are provided intheir turn with eccentric pins e that carry the various rollers 'a1 anda2.

Concentricallv to the axis of the cylinder there are located at each endof the cylinder two internally toothed rings f1 and f2 which drive thegroups of rollers a1 and a2 in a manner known per se through spur wheelsg1 and g2. The respective pairs of toothed wheels g1 and g2 are mountedof ingly similar positions'.

The rollers al and a2 are provided with the usual driving pulleys h1and; h2 at. opposite .ends of the machine for the purpose of rotatingthe said rollers. about'their. axes on their supporting pins e, -thepulleys h1 71,2- rvbeing vdriven by two' :belt's'tnot shown) whichencircle the pulleys.

"The nap-raisingV rollers can be lbrought into operation through therotation vof the cylinder and by causingrthe rings of teeth f1 and/2 torotate tat different speeds and also in lthesame or yinoppositedirections in Vany desiredmanner. At the same time by allowingthe belts that engage the `b eltpul` ley seats hl and v7a2 to remain'stationary or by actuatingthe said "belts, the rollers a1 and a2 canbel caused torotate-in any determined manner around their? supporting'pins which -are mounted eccentricallyon thestub shafts ely;

According to thechosenspeed ratio of the gearings the centres of thenapraising rollers are-enabled during the rotationbf thev cylinder tomove intheirowncircular aths andthusexecute'.oscillatingv or`plendfulating movements relatively to the cloth travelling roundthesaidf rollers.- vBysuitably changingv the gearingsthedirection of'-motion of theec'ceitric pins ej can belvaried, in relation tothedirectinof the-rotation of the cylinder,fandth}us the napraising`action ofthe two series ,of rolilers `can-be reversed with insta-ntresult.l A special effec-t can be produced'by'means ofithe improvedmachine alsoby stoppingtljie c ylind'ergand lallowing the drivingYimechanism to act only upon the stub shafts'- d, Whilst v braking 'the'rollers la* and a2 bv means of theirbrelts. yIf-the braking offtherollers isY 'strongenough` itmav happen that-the entire cylinder (ifitis suit- 4ablv constructed mounted in bearings) willV revolve against'the -c'lct'li backwards in rela-tion; to the direction of. the. card`cloth :renders Dess-ble the. motivation' of" 'all nary napraisingmachines. If, While the cylinder is rotating, the stub shafts d are notrotated, but are stopped relatively to thedrum, the .rollers al and a2can then be driven in the usual manner solely by means of belts passinground their pulley seats h1 and h2. The improved machine can then beused as an. ordinary nap-raising machine, but with this advantage thatthe distance of the rollers from the aXis of the cylinder maybe var'iedwi-thin certainlimits, whereby the great A advantage' is gained oflbeing able` :to vary they distance of the rollers (acting withlandagainst the 'direction of movement of the raising cylinder, vnapraisingrollers providedonsaid cylinder and inea/'ns' :for 'rotating said`ra isingrollers about their a-Xes,` of means interposed betweentheraising roll ers and Vthe ends o fjthe raisingcylinder for impartingeccentric movements to 'the individual nap raising rollers, wherebylsaidrollers arecausedto move. towards and away from the clothduring-theirusualrotation. 2. A nap-raisingmachine of Atherc'ard roll+er type, comprising the combination with a raising cylinder, napraisingV rollers pro-V vided-'on said cylinderv and y means for rot'atLing said raising rollers about. their axes, of means for impartingeccentricy movementsy to the individual nap,vr raisin-g rollers, saidmeans consisting in stub shafts j ournal'ledin the; ends, of' theraising cylinder, pins 'pro-v vided on said stub shafts-for rotatably'supporting the ends ofl the. nap raising rollers with their a-Xes-kofset with respect to the a'resfof the stub-shafts andmeansfor impartingangular'inotionV to thel stubshafts for the purpose'o-f lcausingsaid'rollers to move towards andaway from thexcloth during theirusual'rota'.tion.v f

In testimony c whereof Y I have signed my name toV this specification.'y

' EMlL; WENZEL..

